Skip to main content
. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Neurorehabil Neural Repair. 2014 Nov 21;29(6):526–536. doi: 10.1177/1545968314558602

Table 4.

Means, standard deviations, change scores and Cohen’s d effect size

Outcome Group Time 1 Time 2 Time 1 – 2
Change Score
Effect Size Time 3 Time 1 – 3
Change Score
Effect Size
Mean (SD) Mean (SD) Mean (SD) d (95% CI) Mean (SD) Mean (SD) d (95% CI)
PQRS Trained UC 5.7 (1.9) 7.5 (2.0) 1.8 (2.9) 6.9 (1.4) 1.5 (2.2)
CO-OP 4.3 (2.0) 7.1 (1.7) 2.9 (1.4) 0.5
(−0.4 – 1.4)
8.3 (1.2) 4.5 (1.7) 1.6
(0.5 – 2.7)
PQRS Untrained UC 5.1 (1.7) 5.6 (2.0) 0.5 (2.5) 7.1 (0.7) 1.5 (2.0)
CO-OP 4.8 (1.8) 7.7 (2.0) 2.9 (1.4) 1.2
(0.1 – 2.2)
8.3 (1.7) 3.6 (2.3) 1.1
(−0.1 – 2.3)
COPM-Performance
Trained
UC 4.2 (1.9) 6.8 (2.4) 2.3 (2.1) −0.1
(−0.8 – 0.7)
6.6 (3.0) 2.3 (2.5)
CO-OP 4.6 (1.8) 6.2 (2.5) 1.5 (3.0) 7.7 (2.2) 2.9 (1.8) 0.4
(−0.5 – 1.2)
COPM-Performance
Untrained
UC 3.8 (1.5) 5.9 (2.5) 1.9 (2.3) −0.1
(−0.9 – 0.7)
6.7 (2.7) 2.4 (2.5)
CO-OP 4.7 (2.0) 6.1 (2.9) 1.3 (3.1) 7.8 (2.2) 3.1 (2.7) 0.2
(−0.7 – 1.0)
COPM-Satisfaction
Trained
UC 3.9 (2.5) 6.0 (2.2) 1.8 (2.3) 7.3 (2.5) 3.7 (3.3)
CO-OP 3.8 (2.1) 5.8 (3.0) 1.9 (2.8) 0.1
(−0.7 – 0.9)
7.2 (2.9) 3.2 (1.8) 0.1
(−1.0 – 0.8)
COPM-Satisfaction
Untrained
UC 3.5 (1.7) 5.6 (2.7) 1.7 (2.1) 6.8 (2.7) 2.8 (2.3)
CO-OP 4.0 (1.9) 5.7 (3.0) 1.5 (3.3) 0.0
(−0.8 – 0.7)
7.5 (2.6) 3.2 (3.0) 0.2
(−0.7 – 1.1)
CPI-Importance of
Participation
UC - 53.3 (12.5) - - 50.7 (8.1) −0.5 (5.2)
CO-OP - 52.1 (8.1) - 52.4 (10.5) 1.2 (5.9) 0.3
(−0.6 – 1.2)
CPI-Control over
Participation
UC - 64.1 (16.5) - - 61.9 (13.2) −3.0 (11.4)
CO-OP - 58.4 (9.3) - 63.8 (12.6) 3.4 (7.2) 0.7
(−0.2 – 1.6)
CPI-Satisfaction with
Participation*
UC 69.0 140.0 20.7
CO-OP 70.3 85.0 13.5 0.2
SIS-Participation UC - 54.6 (13.7) - - 56.9 (13.3) 1.9 (12.5)
CO-OP - 47.9 (16.8) - 56.6 (16.7) 8.0 (9.9) 0.5
(−0.4 – 1.4)
SEG UC 211.7 (51.7) 227.5 (42.0) 3.8 (48.9) 228.3 (28.1) 9.4 (41.8)
CO-OP 198.4 (45.3) 224.6 (45.2) 23.2 (38.9) 0.4
(−0.3 – 1.2)
239.2 (36.3) 38.8 (38.1) 0.7
(−0.2 – 1.6)

Abbreviations: UC, usual care; CO-OP, Cognitive Orientation to daily Occupational Performance; SD, standard deviation; CI, confidence interval; PQRS, Performance Quality Rating Scale; COPM, Canadian Occupational Performance Measure; SIS, Stroke Impact Scale; SEG, Self-Efficacy Gage.

*

Data were not normally distributed therefore median and non-parametric effect size r are reported.

Effect Sizes: .2, small effect; .5 medium effect; .8 large effect.